Improvement in cloth-napping machines



Z Sheets-Sheat l;

B. THACKRAH. CLOTH-NAPPING MACHINE.

Patented Nov. 9, 1875.

. 2 SheetsSheet 2. B. THACKRAH.

CLOTH-NAPPING MACHINE.

No.169,74Z, Patented Nov. 9.,'1875.

Wilnesses= N. PETERS, PHOTO-LITHOGHAPHER. WASHINGTON. 0. C.

V which-- as the cylinder revolves.

UNITED STATES BENJAMIN TEIAOKRAEI, OF AMSTERDAM, NEW YORK.

IMPROVEMENT IN CLOTH-NAPPING MACHINES Specifiation forming part ofLetters Patent No. 1 69,742, dated November 9, 1875;

application filed April as, 1875.

To all whom it may concern Be it known that I, BENJAMIN THAOKRAH, ofAmsterdam, in the county of Montgomery and State of New York, haveinvented a new and useful Improvement in Napping-Ma-- chines, whichimprovement is fully set forth in the following specification, referencebeing had to the accompanying drawings, in

Figure l is an elevation of one end of the machine, showing the relativeposition of the sectional cylinders Y Y, the feed-rollers, and the lineof the fabric operated upon. Fig. 2 is an elevation of one of thesectional cylinder-heads, showing the arms 0 to receive the bars 8,provided with brushes E and combs A. Fig. 3 is a side elevation of oneof the sectional cylinders, showing its several parts.

Like letters of reference refer to like parts in each figure.

The object of my invention is to raise with rapidity, certainty, andsafety, simultaneously upon each side of tubular knit fabrics, whenclosed together, or other fabrics, a fine and even nap of any desiredgrade or consistency.

To enable others skilled in the art to make and use my invention, I willdescribe its con struction and operation.

I fix upon the bars 8 the bristle brushes E, of suitable length, width,and thickness, and the metal combs. A, substantially as shown. 1 form asectional cylinder, Y, by placing at a proper distance apart, and atsuitable distances from the ends of a shaft, a pair of sectionalcylinder-heads, made substantially as shown in Fig. 3, consisting of aproper hub, having attached thereto arms 0, said arms be ing provided attheir outer ends with transverse slots or mortises to receive the bars8.

These sectional heads I place and secure firmly upon the shaft, so thatone arm of each head shall form a pair to receive a bar in such positionthat the outer surface of each bar formed of the brushes and combs shallbe parallel to the shaft, and upon the same plane, the combs and brushesthus describing the same circle Two cylinders thus formed I so arrangeand mount one above the other in a frame, and connect together byspur-gears, of equal diameters, attached to the outer ends of eachshaft, that each cylinder shall have. the same velocity. and so set theequal gears upon the shafts of each cylinder that the bars on onecylinder shall, when in motion, interpose or intersect at equal centraldistances between the bars on the corresponding cylinder.

I also construct and place upon each side of my macl1ine,on a linehorizontal with the intersection of the two cylindersY Y, pairs offeed-rollers t, of equal diameters, and driven at equal speed, as fullyshown in the drawings.

The operation of my invention is as follows:

A roll of knit tubular goods, or other fabric, is taken, and the outerend is introduced to the action of the feeding-rollers t on one side ofthe machine, and passed through between the bars of each cylinder to thefeed-rollers t on the opposite side, as indicated by line a a. Motion isgiven to the coacting cylinders in such a direction that the combs willprecede the brushes on the same'bar, and this motion is communicated,through connecting gearing, to thefeed-rollers on each side, therebypassing .the cloth evenly to the action of the coactingnapping-cylinders Y Y, where it is napped on each side, and as evenlydrawn away without any unnecessary stretching. As the alternate bars oneach cylinder, when injmotion, intersect, a serpentine or wave-likemotion is given to the fabric. The combs comb off all surplus material,such as lumps, knots, specks, 850., and protect the brushes fromexcessive pressure, thereby preventing injury to them, and, by combiningthe brushes and the combs, as .described, a nap is raised withoutcutting away the fibers of the goods.

By the combined action of the combs and brushes, arranged and operatingas described, all danger of catching and tearing the fabric is avoided,and a very fine and even nap is raised on each side of the fabric.

By the intersection of the bars of one cylinder at equal distances fromthe bars of the corresponding cylinder all the usual devicesfor-supporting the fabric, such as guides, rolls, &c., are dispensedwith, thereby doing away with all unnecessary stretching, as the bars onone cylinder support the fabric on that side at the same time that theyare napping it,

c while-the other cylinder naps and supports the other side.

The advantage of this invention consists in the simplicity of itsconstruction and operation, and by its use improves in quality andappearance, and enhances in value, the fabric operated upon.' v

What I claim as my improvement, and desire to secure by Letters Patent,is-

1. A cloth-napping cylinder having bars pro-

